Photographic-print square.



H. r. Moms. PHOTOGRAPHIC PRINT SQUARE. APPLICATWN FILED NOV. 14) 1911.

1,183,977. Patented May23,1916.

1H imm UNITED STATES PATENT OFFICE.

HUGO F. HOEFLE, OF ROCHESTER, NEW YORK, ASSIGNOR T0 EASTMAN KODAK COM-IPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

PHOTOGRAPHIC-PRINT SQUARE.

Specification of Letters Patent.

Patented ay 23, 1916.

To all 'whom t may concern:

Be it known that I, HUGO F. HonrLE, of Rochester, in the. county ofMonroe and State of New York, haveinvented certain new and usefulImprovements in Photographic-Print Squares; and I do hereby declare thefollowing to be a flill, clear, and exact description of the same,reference being had to the accompanying drawlngs, forming a part of thisspecification, and to the reference-numerals marked thereon.

My present invention relates to photography j and more particularly tophotographic printing, and it has for lts object to provide a simpledevice capable of being cheaply produced for squaring or truing upphotographic prints prior to mountmg the same, the square being alsoadapted to be used on the mounts and mats provided for' the print asWell.

Further objects of the invention are to render the square capable ofdeiining parallelograms and more particularly rectangles of any desireddimensions and to adapt the square to being folded conveniently andsecurely within small compass.

To these and other ends the invention coni sists in certain improvementsand combinations of parts all as will be hereinaftermore fullydescribed, the novel features being pointed out in theclaims at the endof the specification.

In the drawings: Figure 1 is a top plan view of a square constructed inaccordance with and illustrating one embodiment of my invention; Fig. 2is a section on the line a-a of Fig. 1, and Fig. 3 is a section on theline l bof Fig. 1, b oth sectional views being enlarged.

Similar reference numerals throughout the several igures indicatesimilar parts.

In order that the square may completely define an inclosed space'forming the area of the print it is made of two angle squares A and B,the arms 1 and 2 and 3 and 4, re-

spectively, of which overlap each other at 5 and 6, while one unit ofeach pair also overlaps a unit of theother pair, as at 7 and 8, formingin the present instance an inclosed parallelogram C. The arms of eachangle A and B are detachably secured together in rigid relationshippreferably in the manner indicated in Fig. 3 which illustrates the .arms3 and 4 of the angle square B and to this end, the arm 4 is provided inthe region of the overlapping portion 6 with recesses 9 with whichengage pins or projections l0 that, in the present instance extendthrough reg1stering openings 11 in the arm 3 and are secured to aremovable plate 12. Extending through the latter and both armsis a bolt13 having a head 14-engaging on one face of one arm and carrying athreaded nut 15 at the other end which is tightened down against theplate 12 to hold the projections l() in the recessesof the arm. Theserecesses are so spaced and arranged with reference to the angle of thearms 3 and 4 that the bolt and plate 12 may be removed and the armsdetached from the relation of Fig. 1 and laid one on top of the other toextend coincidently, with the apertures 9 and 11 in a reverse register.The plate 12 and bolt 13 may then be replaced in the same manner asbefore and the square thus maintained in a folded relation in which itis secure 'and compact.

In order to contract or enlarge the area C,

'the two angle squares A and B are made to slide upon each other in twodirections at right angles to each other so that either or bothdimensions of the area may be varied and to this end, all of the armsare provided with guides constituted in the present instance by centrallongitudinal slots 16 and at the intersecting portions 7 and 8 bolts 17are passed through the arms within the slots to serve as securingdevices. A head 18 on each bolt engages the outer face of one arm,

being the arm 1 in Fig. 2, while on the other side of the intersectingportion 7, for instance, it is provided with a plate in the form of aspider 19, engaged by a threaded thumb nut 20. A spring 21 is suitablyin- 'terposed between the thumb nut and the spider for purposes laterdescribed. The spider 19 embodies suitably spaced fingers or projections22 and 'these engage the slotted guides 16 of each arm laterally of thebolt 17 and on opposite sides of the intersecting arm, one pair ofoppositely arranged ngers being, of course, in a plane lower than thatof the other in order to reach the under arm.

The bolt 17 is locked against rotation relatively to its extension orspider 19, as by the formation of a flattened portion 23 thereon passingthrough a corresponding opening in the spider and when it is desired toadjust the square to change the size of the area C, the nut Q isloosened. This doesv not release the intersecting arms from engagementthey being still held by the spring 21, but with a yielding pressure sothat one arm may be slid upon the other to any location desired. Duringthis operation the lingers 22 traveling in theguides 16 rigidly maintainthe true angular relation of the arms, being likewise held in place bythe pressure of the spring. The thumb nut 20 is tightened after theadjustment is made clamping the spider andboth arms tightly together andthe 'square' is read)T vfor use. Of course, both of the bolts 17 areremovable by detaching 'the thumb nuts 2O therefrom, but may be againapplied (simply to keep the partstogether) when the arms are assembledin the folded relation before described.

If desired, the arms of either angle square A or B, or one arm' ofeach., representing two dimensionsof the area C, may be graduated, asindicated, so that the dimensions of the latter in a given instance maybe predeterminedD A The device of my invention will suggest itself forother similar uses outside of the photographic art, but I have describedit in this .connection as the present embodiment was designed primarilyfor truing up photographic prints -I claim as my invention: l

1. In a square, the combination with a pair of crossed arms providedwithslots forming guides, of .a spider comprising a plate lying flat againstand spanning the crossed portion vof the arms and provided withrelatively rigid and inseparable fingers cooperating with the slot ineach arm on opposite sides of the other arm, said fingers proceedingdownwardly from the plate to the planes of the respective arms andthence longitudinally within the slots to lie flush with the face of thearm, and a bolt extending centrally through the spider and through theslots of both arms for securing said parts together.

2. In a square, the combination with a pair of arms each having twoseparate recesses therein so positioned relatively to each other andangularly` te the arm as to adapt the recesses of one arm ytorespectively reglster with those of the other when the arms are eitherdisposed angularly to each other or coincidently in superposed relation,and means comprising relatively fixed projections extending through therecesses for securing the arms together in either position.

HUGO F. HGEFLE. Witnesses:

RUSSELL B. Gnrrrrrn, FLORENCE E. FRANCK.

